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<div class="title">qqtsoundeffect.h</div>  </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="preprocessor">#ifndef QQTAUDIOEFFECT_H</span></div><div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="preprocessor">#define QQTAUDIOEFFECT_H</span></div><div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;</div><div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;</div><div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="preprocessor">#include &lt;qqtwavaudiomanager.h&gt;</span></div><div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;</div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="preprocessor">#include &lt;qqtcore.h&gt;</span></div><div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="preprocessor">#include &lt;qqt-local.h&gt;</span></div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment"> * QQtWavSoundEffect = QSoundEffect + QSound +...</span></div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment"> * QQtWavSoundEffect支持从wav获取声音并输出，弥补QSoundEffect（+他的高级点的封装QSound）不能支持选择设备的缺失。</span></div><div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment"> * QQtWavSoundEffect默认使用默认输出设备。</span></div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00014"></a><span class="lineno"><a class="line" href="class_q_qt_wav_sound_effect.html">   14</a></span>&#160;<span class="keyword">class </span>QQTSHARED_EXPORT <a class="code" href="class_q_qt_wav_sound_effect.html">QQtWavSoundEffect</a> : <span class="keyword">public</span> QObject</div><div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;{</div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;    Q_OBJECT</div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;</div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="keyword">public</span>:</div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;    <span class="comment">//这样做的目的，在于使用一个实例去播放音效。</span></div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;    <span class="comment">//如果是个临时变量，函数执行返回了，但是还没播放完，甚至还没来得及开始呢，这时，播放不出来的。</span></div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;    <span class="keyword">static</span> <a class="code" href="class_q_qt_wav_sound_effect.html">QQtWavSoundEffect</a>* Instance ( QObject* parent = <span class="keyword">nullptr</span> );</div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;</div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;    <span class="keyword">explicit</span> <a class="code" href="class_q_qt_wav_sound_effect.html">QQtWavSoundEffect</a> ( QObject* parent = <span class="keyword">nullptr</span> );</div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;    ~<a class="code" href="class_q_qt_wav_sound_effect.html">QQtWavSoundEffect</a>() {</div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;        stop();</div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;    }</div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;</div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;    <span class="comment">//设置设备以后，不需要每次都设置</span></div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;    <span class="comment">//更换设备不会引发播放更改，只会更改内部设备记录。调用play才会导致播放更改。</span></div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;    <span class="keywordtype">void</span> setOutputDevice ( <span class="keyword">const</span> QAudioDeviceInfo&amp; output = QAudioDeviceInfo() );</div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;</div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;    <span class="keywordtype">void</span> useDefaultOutputDevice();</div><div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;</div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;    <span class="keywordtype">void</span> useCustomOutputDevice ( <span class="keyword">const</span> QAudioDeviceInfo&amp; output );</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;</div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;    <span class="keywordtype">void</span> play ( QString localFile );</div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;</div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;    <span class="keywordtype">void</span> stop();</div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;</div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;    <span class="comment">//设置声音以后，不需要每次都要设置。</span></div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;    <span class="keywordtype">void</span> setVolume ( qreal volume );</div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;</div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;    <span class="comment">//设置loop会保存下来，不需要每次设置。</span></div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;    <span class="keywordtype">int</span> loops() <span class="keyword">const</span>;</div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;    <span class="keywordtype">int</span> loopsRemaining() <span class="keyword">const</span>;</div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;    <span class="keywordtype">void</span> setLoops ( <span class="keywordtype">int</span> loops );</div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;</div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;    <span class="comment">//设置读文件的时钟快慢（硬盘快，时钟快，每次读的少；硬盘慢，时钟慢，每次读的多）</span></div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;    <span class="comment">//默认使用 macOS SSD 20ms</span></div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;    <span class="comment">//Windows上，机械硬盘，可能会延迟，可以设置100ms。</span></div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;    <span class="keywordtype">void</span> setTimerInterval ( <span class="keywordtype">int</span> millSecond = 20 ) {</div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;        mWavInput.setTimerInterval ( millSecond );</div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;    }</div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;</div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;<span class="keyword">private</span> slots:</div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;    <span class="keywordtype">void</span> readyRead();</div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;</div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;<span class="keyword">private</span>:</div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;    <span class="comment">//不需要额外初始化的地方</span></div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;    <span class="comment">//mingw32 5.3 静态成员不准导出？作为静态类这块编译出现错误</span></div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;    <span class="comment">//error: definition of static data member &#39;QQtWavSoundEffect::msInstance&#39; of dllimport&#39;d class</span></div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;    <span class="comment">//这个已经查出来了，在qqt_header.pri有一个WIN64的宏缺失，导致QQT_STATIC_LIBRARY缺失，引发QQt在QQTSHAREDEXPORT=import下编译，所以引发这个变量重新定义的错误，而报错是在导入的类里面定义了静态成员，也就是说导入类不准许静态成员的定义初始化代码出现，引入类的静态成员在自己的实现文件里出现了定义。变量重定义了。</span></div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;    <span class="keyword">static</span> <a class="code" href="class_q_qt_wav_sound_effect.html">QQtWavSoundEffect</a>* msInstance;</div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;</div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;    <a class="code" href="class_q_qt_wav_audio_input.html">QQtWavAudioInput</a> mWavInput;</div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;    QIODevice* mIOInput;</div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;    <a class="code" href="class_q_qt_audio_manager.html">QQtAudioManager</a> manager;</div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;    QString mSourceFile;</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;    <span class="keywordtype">int</span> mDataSize;</div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;    <span class="comment">//volume会被记住。</span></div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;    qreal mVolume;</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;    <span class="keywordtype">int</span> mLoops;</div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;    <span class="keywordtype">int</span> mLooping;</div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;};</div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;</div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;<span class="comment">//在使用QQtWavSound等函数之前，调用类的instance函数，+parent 初始化一下实例。</span></div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;<span class="comment">//=QSound::play()</span></div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;QQTSHARED_EXPORT <a class="code" href="class_q_qt_wav_sound_effect.html">QQtWavSoundEffect</a>* QQtWavSound ( QString localFile = <span class="stringliteral">&quot;&quot;</span> );</div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;</div><div class="line"><a name="l00094"></a><span class="lineno"><a class="line" href="class_q_qt_sound_effect.html">   94</a></span>&#160;<span class="keyword">class </span>QQTSHARED_EXPORT <a class="code" href="class_q_qt_sound_effect.html">QQtSoundEffect</a> : <span class="keyword">public</span> <a class="code" href="class_q_qt_audio_manager.html">QQtAudioManager</a></div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;{</div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;    Q_OBJECT</div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;<span class="keyword">public</span>:</div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;    <span class="keyword">explicit</span> <a class="code" href="class_q_qt_sound_effect.html">QQtSoundEffect</a> ( QObject* parent = <span class="keyword">nullptr</span> ) : <a class="code" href="class_q_qt_audio_manager.html">QQtAudioManager</a> ( parent ) {</div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;</div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;    }</div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;</div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;    <span class="keywordtype">void</span> play ( QString localFile ) {</div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;        QByteArray bytes;</div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;        QFile file ( localFile );</div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;        file.open ( QFile::ReadOnly );</div><div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;        bytes = file.readAll();</div><div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;        file.close();</div><div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;        QByteArray tmp ( 44, <span class="charliteral">&#39;c&#39;</span> );</div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;        bytes &gt;&gt; tmp;</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;</div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;        outputAudioFormat() = defaultOutputDevice().preferredFormat();</div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;        startDefaultOutput();</div><div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;        write ( bytes );</div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;        <span class="keywordflow">return</span>;</div><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;    }</div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;</div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;    <span class="comment">//需要用户设置输出设备</span></div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;    <span class="keywordtype">void</span> customPlay ( QString localFile ) {</div><div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;</div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;        QByteArray bytes;</div><div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;        QFile f ( localFile );</div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;        f.open ( QFile::ReadOnly );</div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;        bytes = f.readAll();</div><div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;        f.close();</div><div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;</div><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;        <span class="keywordflow">if</span> ( !outputAudioFormat().isValid()</div><div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;             || !outputDeviceInfo().isNull() ) {</div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;            outputAudioFormat() = defaultOutputDevice().preferredFormat();</div><div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;            outputDeviceInfo() = defaultOutputDevice();</div><div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;        }</div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;</div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;        startOutput();</div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;        write ( bytes );</div><div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;</div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;    }</div><div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;</div><div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;signals:</div><div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;</div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;<span class="keyword">public</span> slots:</div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;</div><div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;<span class="keyword">private</span> slots:</div><div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;</div><div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;<span class="keyword">private</span>:</div><div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;};</div><div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;</div><div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;<span class="preprocessor">#endif // QQTAUDIOEFFECT_H</span></div><div class="ttc" id="class_q_qt_wav_audio_input_html"><div class="ttname"><a href="class_q_qt_wav_audio_input.html">QQtWavAudioInput</a></div><div class="ttdoc">The QQtWavAudioInput class QQtWavAudioInput具备QAudioInput的能力，可以把wav文件的音频帧，通过readyRea...</div><div class="ttdef"><b>Definition:</b> qqtwavaudiomanager.h:41</div></div>
<div class="ttc" id="class_q_qt_audio_manager_html"><div class="ttname"><a href="class_q_qt_audio_manager.html">QQtAudioManager</a></div><div class="ttdoc">The QQtAudioManager class 为用户提供连接声卡的通道，一个Manager包括：输入选择，输出选择，输入读信号，...</div><div class="ttdef"><b>Definition:</b> qqtaudiomanager.h:58</div></div>
<div class="ttc" id="class_q_qt_wav_sound_effect_html"><div class="ttname"><a href="class_q_qt_wav_sound_effect.html">QQtWavSoundEffect</a></div><div class="ttdef"><b>Definition:</b> qqtsoundeffect.h:14</div></div>
<div class="ttc" id="class_q_qt_sound_effect_html"><div class="ttname"><a href="class_q_qt_sound_effect.html">QQtSoundEffect</a></div><div class="ttdoc">The QQtAudioEffect class 未实现 </div><div class="ttdef"><b>Definition:</b> qqtsoundeffect.h:94</div></div>
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